Question: At what position did John H. Hoover replace Chester W. Nimitz?
Paraphrase: John H. Hoover replaced Chester W. Nimitz for which position?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q217645 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P1365 wd:Q6236887 }